no i have one of those exact ones in my 32 too and honestly its a piece of crap compared to my jagers. it is way over what i need to heat it and i had to turn it all the way up to get it to 86 lol. you are right that it doesnt have any calibration though. i ordered two 150 watt ebo jagers off of ebay for 15 bucks a piece and they are working like a charm. they took forever to find but look around you should find somthing if you are looking for a new one.